Open AccessStudy on Abnormal Heating Mechanism of FRP Rod of Composite Insulator
Author(s) -
Leilei Zeng,
Yu Zhang,
Nianping Yan,
Xuemei Miao,
Chao Tong,
Xierong Zeng,
Lei Zhou,
Zou Yang,
Yan Liu,
Zhibin Deng
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/677/2/022089
Subject(s) - mandrel , materials science , fibre reinforced plastic , composite number , composite material , epoxy , fourier transform infrared spectroscopy , x ray photoelectron spectroscopy , scanning electron microscope , glass fiber , insulator (electricity) , polarization (electrochemistry) , optics , chemistry , nuclear magnetic resonance , physics
In recent years, abnormal heating phenomenon has occurred in composite insulators in China, which have brought potential trouble to the safe operation of power grid. The abnormal heating of fiber reinforced plastic (FRP) rod is an important reason for the temperature rise of composite insulators. In order to study the mechanism of abnormal heating of the FRP rod of composite insulator, three analysis methods of material including scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) are combined to make a microscopic analysis of abnormal heating phenomenon and sample of mandrel, which find that the abnormal heating mandrel of epoxy resin matrix and glass fiber were all deteriorated and accompanied by the invasion of moisture and the produce of HNO 3 . The experimental results show that polarization loss, partial discharge and resistance loss caused by deterioration of mandrel are the main reasons for abnormal heating of FRP core of composite insulator.